After 65 years of exclusively steam locomotion on the
“Overland” route from Chicago to San Francisco, in 1934 the Union Pacific
introduced dieseleletric powered streamliner service for the first time.
(On October 22, 1934, 57-hour transcontinental mail
service by rail was also introduced using this new high-speed train.)
To help introduce this new service to the public, The UP published a14-page
illustrated booklet eititled “Progress” which is shown in full below. -BCC